Sharing some random tidbits I learned throughout the week.

• CORS stands for Cross Origin Resource Sharing and it is a mechanism that allows restricted resources to be requested from another domain outside of the domain which the resource originated from.
• Opal is a Ruby to Javascript Compiler.
• Trades might not even make it to stock market.
  • If you are selling a stock via a broker and someone else if buying the same stock from the broker, the broker may just exchange them there, avoiding transaction fees.
  • Another way they could make money is if the other person’s bid price is lower than your ask price.
• In Cuba, there are 2 types of currencies.
  • The Cuban Peso (CUP)
  • Cuban Convertible Pesos (CUC) given to tourists. 1 CUC == 24 CUP
• Memoization is an optimization technique used to speed up programs by caching expensive function calls and returning the cached results when called with the same inputs.
• Letter Opener is a neat gem that lets you preview your mail in the browser instead of actually sending them.
• tmuxinator lets you configure a yaml file for your project to automate start up your development environment.
  • When running the command mux [project name], I get my servers, workers and services up and running all at once.
• Weekly vim
  • Can copy selected text to system clipboard within vim using "*y.